Waterborne graphene conductive anticorrosion coating and preparation method thereof

Abstract

The invention relates to a water-based graphene conductive anti-corrosion coating and a preparation method thereof. The raw materials include component A and component B; the component A is mainly prepared from the following raw materials in parts by weight: water-based epoxy resin 40-60 parts, 20-60 parts of fillers, 2-4 parts of additives, 10-20 parts of water; the component B is mainly prepared from the following raw materials in parts by weight: 5-10 parts of graphene aqueous dispersion, 10 parts of zinc oxide -20 parts, 40-60 parts of water-based epoxy curing agent; the preparation method of the graphene aqueous dispersion comprises the following steps: mixing graphene, carboxymethyl cellulose and water, shearing and dispersing for 1h-2h, to obtain the mixture; The mixture was sonicated for 3h-4h. The water-based graphene conductive anti-corrosion coating, the solvent is water, energy saving and environmental protection, and the addition of conductive filler graphene and zinc oxide is small, well dispersed in water, and can form a conductive network, has excellent conductive anti-corrosion effect, especially suitable for storage Anticorrosion of tanks, pipelines, underground grids, etc.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to water-based graphene conductive anticorrosion coatings and a preparation method thereof. Background technique [0002] Anti-corrosion coatings are widely used in modern industry, transportation, energy, marine engineering and other departments. With the rapid development of my country's petroleum industry, railway, highway bridge, metallurgical industry, electric power and energy industry, machinery and textile industry, industrial product field, automobile, ship and container, etc., there is an urgent need for continuous innovation in the field of anti-corrosion coatings . In some special fields such as power transportation, storage tanks, and pipelines, on the one hand, it is required that metal materials not only have anti-corrosion properties, but also maintain the electrical conductivity of the material. [0003] Conductivity means that the coating has the ability to condu...

AI Technical Summary

Problems solved by technology

However, graphene and metal oxides are difficult to wet and disperse in aqueous solution, and graphene is easy to agglomerate in the coating, thus affecting the performance of the coating

Patent 201610813904.5 reports a conductive coating with graphene oxide and tin oxide nanoparticles as fillers, but the coating has poor stability and general anti-corrosion performance; patent 201611154411.1 reports a conductive anti-corrosion coating with metal and non-metal conductor material particles as conductive fillers, However, the resistivity of the coating is still high; patent 201811076130.8 reports an anti-corrosion coating using hydroxyacrylic resin and epoxy resin as film-forming substances, modified graphene and carbon nanotubes as conductive fillers, but the coating contains a large amount of organic solvents, easy to cause environmental pollution

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